40th Birthday trip to Europe

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My friend calls me to ask if I would like to join her on a trip to Europe to celebrate her 40th birthday, with a group of her friends, to forget the big 40. Just us girls.
I am thinking beach, I need to work out, I need to go shopping, I need to buy some new summer clothes, I need to have a bikini body…But then she also asks us to come up with a few suggestions as to where to go, preferably a city with a bit of history, culture, sightseeing.
Ok, no beach holiday. No need to have that bikini body. I can keep procrastinating with my diet and exercise.
So I start looking up countries where we could go. Amsterdam sounds nice, Italy…maybe…France
I am hoping it is not Portugal or Spain, as I have been already. I have not been to the whole country but I would like to visit a different one. I do actually want to tick off my list the number of countries I have been to.
I knew it, I knew she would come up with Portugal, that is precisely why I was hoping it would not be Portugal.
It turns out to be this place called Porto, also called Oporto. To be honest, I have never heard of Porto. I am quite disappointed with the choice.
My soon to be 40 year old friend tells us all to do some research regarding places to eat, places to visit and some places for nightlife as well. I get into it and find out all about this city that I had never heard of before.
So it is a coastal city in the north of Portugal. It is the second largest city after Lisbon. When I visited last time, I went to the South.
It is known for its bridges, its port wine, its tiled buildings, street art, a lot of historic buildings, full of culture and its food and people.
I am now eager to go on a trip, no matter where. Now I am also curious about this city.
So what do I think about Porto now?